Air strainer for combustion engines



JMW/rm www MM@ Filed July 2l, 1919 w. L. oLMsTEAD ET AL AIR STRAINER FOR- COMBUSTION ENGINES ,gli

March 8, 1927.

Patented Mar. l38,4 1927.

UNITED STTES PATENT oFFICE.

WILLI/aiu L. oLMsTnAnoF Pomona, AND EDWARD L. oLmsfrEAD, or ANAHEIM, canironiura.l f

AIR STB/AINER FOR `COIMIB`VU"S'.I.IO1\T ENGINES.

Application alfa July 21,

`the air cleaned bythe strainer to the inlet manifold; and a controlling means in connection therewith. Y

Another object of the invention is to so mount the screening device that it will be self-cleaning. v

Other objects, advantages and features of the invention may appear from the accompanying drawings, the subjoined detailed.-

description and the appended claims.

The drawing illustrate the invention.` Figure 1 is a side elevation of the apparatus attached to an engine, which latter is diagrammatically shown. Fig. 2 is an enlarged view of the strainer similar to Fig. 1, with parts-broken away;-

also showing the apparatus detached from the engine.

Fig.,v 4 is an enlarged fragmentary sectional 'elevation ofthe air strainers, parts broken away. i

The air strainer lis preferably mounted in a bracket 2 which bracket basin the bot-v tom portion the screw holes 3 by which itis 40. secured by screws 5 to the engine 4. To one end of the' bracket 2 there isthe ring `por- 'tion 6 in which is slidably fttedthe. perforated casing 7 which casing has its other end threaded to fit the socket end `8 of a hollow casting p9; and extending forward at the outer end of the bracket 2 is` an arm 11 Awhich has on its outer end the saddle por tion 12 that lits the peripheryon the underside of the circular blower housing 13, and

preferably the casting 9 and circular housing are integral. It -will be noted that with the construction as described above that the strainer 1 is secured'to the engine by the bracket 2A to which the strainer is attached 1919. Serial N0. 312,446.

by one lside only; the other side of the' strainer being unsupported.

Also integral with thev housing-13 is the i cylindrical extension 14 that has on its outer end the lugs 15 which lugs register with similar lugs 16 of a casing 17 and these lugs have registering bolt holes and are secured together by the'bolts 18.

The casing 17 can be of any desired shape i or form to fit the air intake of acarbureter. The carbureter 19 in Fig. 1 is diagrammati- -cally shown and can be-of any standard make or form; also the carbureter 19 is connected to the engine manifold 20 in the usual way. `As herein shown the connections consist ofregistering flanges 21 and 22 on the carbureter 1 9 and manifold 20 respectively and these flanges are secured together by the bolts 23. I

The housing 13 has the'end plate 25 secured to'the face thereof by the screws 24, and this end plate has in its center the boss 26 in which boss is secured the ball bearing 27; and this ball bearing 27 is in alin'ement with a similar ball bearing 28 that is secured in a spider 29 on the opposite side of the housing 13. WVithinethe ball bearings 27 and 28.is mounted the shaft 30; which shaft can be driven by any well known means; that is, it can be driven by the engine shaft'by any usual connection; or itv can be driven by o .the cam shaft, magneto shaft or fan shaft, Fig..3 is'a'sectlon on the line .m3-of Fig. 2.

which driving connections arev well known and-not shown in detail.V Attached to the shaft 30 vis the fanj31 which has a plurality of wings 32; and #this fan whenfgrotated in the direction of the arrow infFig. 2 causes a suction inthe air cleaning'receptacle to draw air into said receptacle; andsueks the air from the interior of the casing 9 and drives it through the cylinder 14into the air intake of the 'carbul reter.

lVithin the perfo-rated casing 7 there ispreferably mounteda wire screen 33 which screen has a flange extension 34 at one `end thereof that normallyfabuts a .flange extension 35 in the casing`9l and this screen is open at the flanged end. Over the screen 33 to the extension 3.4Y of the wirescreen '33.

Over these flanges 34 and 37 there-is placed 'the rubber v gasket 39 which gasket and flanges 34 and 37 are secured between the threaded-'end 38 of the perforated casing 7 and the flange 35 of the casting 9 by which connection these parts are held in'place and also by which connection the casing 7 can be easily removed for cleaning the parts when dust has accumulated thereon.

As seen in the drawings, the smaller openings 40 taken Acollectively have.i a much greater area than? the openingthrough the cylinder 14. which opening 14 is snbstant-iah,

ly the diameter of the air inlet of the carbureter; Aand also it is preferred that the'cloth 36 be' a mesh that will produce Small re- As previously stated the shaft 30 can be` driven by the engine shaft and also rotated at a speed sufficient to supplv the engine with clean air without depending upon suction.

A pipe 41 is providedfor liv-passing the clean air from the interior of the casting 9 directly to the engine manifold Q0: and a valve 42 is interposed in the pipe 41 for controlling the flow of air through said pipe D to the engine.

In operation the device is attached to the air inlet of the carbure-ter; and the shaft 30 is connected by somedriving means to the engine shaft so that when the engine is put in operation the shaft 30 will be rotated to drive air into the carbureter in quantities to supply lhe'engine cylinders; and as the air is drawn through the cloth 36 it will be cleaned of impurities and thereby eliminate the dust trouble in the engine. Bv

'..mounting the strainer 1, as set forth above with one side only'attachedto the bracket 2, solid particles such as dust and the like gines. having a perforated casing` a wire screen within said perforated casing, a cloth bag over said wire screen: a hollow casing;

means whereby the. wire screen and cloth bag are secured to said hollow casing: means adapted to form a 'connection between said hollow casing and ai earbureter: and a fan inv said hollow casing for sucking ai-r through the perforated Casing and cloth bag and discharging the air into'the carburetor.

3. In an air cleaner for combustion engines. a screen enclosed receptacle` means adapted to form a connection between said screened receptacle and the. air intake of an engine, a fan in said connection for drawing air into said screened receptacle and for discharging said air into the intake of said engine: and means for liv-passing Said cleaned air fromV said screened receptacle.

4. vIn an air cleaner for combustion engines, a screen enclosed receptacle` a connec tion to connect' the screened receptacle to the air intake of an engine: a fan in said connection for drawing air into saidscreened receptacle and for discharging said air into said intake; a pipe adapted to extend from said screened receptacle to anpcngine;A and a vvalve 1n said pipe.

In testimony whereof. we have hereunto.

set our hands at Los Angeles. California,

Athis fifteenth day of Julv, 1919.

WILLIAM 'L oLMsTEAn. EDWARD L. oLMsTnAn.

SND 

